I have been working with ui.multiselect.js
which is just similar to HTML Select:
I wanted the length of the selected elements. So i had used the below code:
var selectedOption = document.getElementById('animalList').selectedOptions.length;
But it seems selectedOptions.length
is not working in IE but working properly in Chrome and Firefox
Below are the alternatives i have already tried:
var select = document.getElementById('animalList');
var len = select.options.length;
I get the result as 0.
$("#animalList :selected").length;
I get the result as 0.
To get the count of a select
element using multiselect
, make sure your code looks like the following :
$(document).ready(function() { $('button').click(function() { // jquery version var count = $("#foo :selected").length; console.log("jQuery Count: " + count); // pure javascript version var options = document.getElementById('foo').options, count = 0; for (var i=0; i < options.length; i++) { if (options[i].selected) count++; } console.log("Pure Javascript: " + count); }); });
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <button>Count Selected</button><br> <select multiple id="foo"> <option value="volvo">Volvo</option> <option value="saab">Saab</option> <option value="opel">Opel</option> <option value="audi">Audi</option> </select>
I have included both a pure javascript version and jQuery version which are executed when you click the button.
You can get the length using the following method
var len = 0;
if($("#animalList").val()!=null){
len = $("#animalList").val().length;
}
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